Abstract: The present invention provides a metal powder-polymer matrix film for use in delivering metal powder to a three-dimensional printing process, the matrix comprising at least one metal powder and a polymer sheet, wherein the metal powder is incorporated within the polymer sheet architecture or on the polymer sheet surface, and wherein the polymer sheet has a thickness that is at least half that of the powder thickness.

Abstract: A method for producing polyhydroxyalkanoate (PHA) comprises the steps of culturing in a culture medium comprising pyrolysis wax obtained from the pyrolysis of polyethylene and optionally a surfactant one or more bacterial strains which are capable of accumulating PHA from pyrolysis wax, and recovering the PHA from the culture medium. Typically, the bacterial strains are selected from the group consisting of: A. calcoaceticus BD413; A. calcoaceticus RR8; B. sepacia RR10; P. aeruginosa 3924; P. aeruginosa GL-1; P. aeruginosa PAO1; P. aeruginosa RR1; and P. olevorans.

Abstract: A method for generating power from water by pressure retarded osmosis comprises the steps of: pumping sea water into a first pathway which is at least partially defined by a first face of a membrane, said membrane comprising a distinct electrically conductive porous nanotube layer; pumping fresh water into a second pathway which is at least partially defined by a second face of the membrane to generate an osmotic pressure gradient across the membrane; and harnessing the power generated from the osmotic pressure gradient.